* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: #efefef;
}

.game-wrapper {
  max-width: 420px;
  margin: auto;
  padding: 12px 8px;
}

.game-wrapper canvas.game-ui {
  display: block;
  width: 100%;
  -webkit-tap-highlight-color: transparent;
  background-color: #fbc050;
  box-shadow: #000 0 0 10px inset;
}